Hardware for guy strain insulators



- Gfc. HILL Oct. 16, 1934.

HARDWARE FOR GUY STRAIN INSULATOHS Filed April 1, 1931 Patented Oct. 16, 1934 7 1,077,129 HARDWARE non GUY STRAIN msULArons Gregory 0. Hill, Baltimore, Md assignor to Locke Insulator Corporation, Baltimore, Md a cor- 'poration of Maryland Application April 1, 1931, Serial No. 527,000

3' Claims. (01. 1:34am

' The invention relatesto insulators, particularly those of the guy straintype and hasfor its general object the provisionof novel hardware or means for connecting aplurality of insulators I, of this type in chain formation or to connect one with a stationary support, conductor clamp or the like.

The particular type of insulator dealt within the carrying outof this invention is one of an elongated generally rectangular shape; and

formedas a dielectric body provided with transverse openings at right angles to each other, the materialqbetween the openings being placed under compression by the suspension orconnecting l5 hardware which passes through them. Ordinarily the faces of an insulator of this type are con.- caved. Furthermore the adjacent surfaces of the transverse openings are curved. ,In connecting insulators of this type or in connecting one, with,

some supporting or other element a considerable problem arises as to avoiding undue strains which might damage the insulating material. 1 g

. An important object'of the present invention is to provide connectinghardware for an insu- 25, lator of this type embodying separable parts which may be quickly and easily, engaged with the insulator without requiringanypbending or anypec'uliar manipulationto thread the parts through the transverseropenings. provided for their reception and to bring them into the proper position for connection with other elements.

Another object of the invention is to provide connecting hardware of this type embodying a member for engagement within the transverse opening, thislmember having a face or surface conforming in shape to the curvatureof the inner Wall of the opening so that the strains will be distributed throughout arelatively large area and be prevented from concentrating at any point.

' Another object is to provide connecting hardware of this type including longitudinally extending members so shaped as to avoidcontact with and the bringing of compressive strains upon the corners of the dielectric material so 5 that there willbe no risk of. cracking, chipping or otherwise damaging the same. An additional object is to provide connecting members of this character which will be simple and inexpensive to make, easy to. apply, positive in action, efficient and durable in service, and a generalimprovement in the art.

. To the attainment of the: foregoing and other objects and advantages, the invention preferably consists in the details of construction and the 55- arrangement and combination of parts to be hereinafter more fully described and claimed, and illustrated in the accompanying drawing in which: 0

Figure 1 is a longitudinal section through a guy strain insulator constructed in accordance with my invention, one of the connecting links being in elevation and the other in section,

Figure 2 is a side elevation of what appears in Figure 1, and

Figure 3 is a cross section taken on the line 33 of Figure 1.

Referring more particularly to the drawing, the numeral 10 designates an insulator of the guy strain type formed as an elongated block-like body of dielectric material, usually porcelain, and having its longitudinal sides concaved as at 11 its longitudinal edges rounded off as at 12, and its corners rounded olf as at 13. The body is formed with transverse openings 14-. which are usually or preferably circularin cross section, at least at the center, with their ends flaring as shown. There are two of such openings arranged at right angles and having their adjacent or inner surfaces 15 curved, the convexity being toward the adjacent ends of the insulator. The openings 14 extend out into the centers of the concave faces 11. it

In carrying out my invention I provide connecting means comprising links 16 and transverse members 17 connected therewith and extending through the openings 14. The links 16 are shown as formed from a single strip of metal of suitable gauge which may be a stamping, forging or casting and of angular shape to define portions 18 lying closely within the concave faces 11 of the insulator and to define converging portions lQ'projecting beyond the end of the insulator and leading to spaced parallel attaching portions 20 apertured for the passage of a bolt 21, of course equipped with a nut 22, which is for the purpose of establishing connection of the linkswith similar links 23 carrying an adjacent insulator, or connection with a stationary support, conductor clamp or. anything else desired. A look, nut washer 24 may be provided if desired. Preferably the portions 18 are concavo-convex cross section or at least have their, confrontingfaces convexed for conformingengagementwithin the concave facesll. The freeends of the links 16 are preferably widened as at 25and formed with rectangular openings 26 for a purposeto be'described. i j

Each transverse member 17 is shown ascorn prising an elongated body which may conveniently be formed as a casting having one side able holes in the ends of the member 17 out wardly of the links for positively preventing any disconnection. V I t g To assemble the hardware, the member'l'l is threaded through the opening 14', whichmay be readily done by canting it,, after which the links are manipulated to bring the openings 26 therein over the horns or projections 28. The links are then swung toward each other and engaged with the links 23 of the next adjacent insulator or with any other elements to which connection is to be made, and the bolt 21 is inserted and the nut 22 applied- The-cotters 29 are then placed in position. The other member 17 is then placed through the'other opening 14 and theother' set of links 16 applied in thesame manner.

In the use-of hardware constructed in accordance with my invention it is apparent that'there is no necessity for bending any of the'parts to get them into place and in fact the parts are intendedto be made sufiiciently heavy that bending will not be possible as there is no desireto permit distortion of any sort after installation, the intention being that the construction be-rigid so as to possess great durability and strength. Furthermore the parts are of such form that there will be no difliculty experienced in effecting insertion through the transverse openings in the insulator body. The provision of the horns onthe transverse members is of great importance as these horns overlie the openings provided for their reception inthe links and therefore positively prevent disconnection in service. 'Byform ing the transverse members with the concave faces they conforrningly engage the inner walls of'the transverse openings, thereby distributing the strains throughout a large area and avoiding concentration at any point or points. Actual service has demonstrated'that' with hardware constructed in this manner the porcelain is not subject to stresses and is protected against cracking, chipping or other detrimental actions.

While I have shown and described the-preferred embodiment of the invention, it should be understood that the disclosureis merely an exemplification of the principles involved as the right is reserved'to make all such changes inthe details of construction as will widen'the' field of utility and increase the adaptability of the device provideo. such changes constitute no departure from the spirit of the invention or the scope of the claims hereunto appended.

Having thus described the invention, I claim: 1. Connecting meansforan -insulator of the strain type formed as a bodyof dielectricmatee rial having transverse openings therethroughar-- ranged at right angles to each other-with the adjacent surfaces of the'respective' openings curved,- comprising a single integral transverse'member adapted to be inserted through each opening with its ends adapted to project beyond the opposite sides of the insulator, the transverse m'ember hav-' ing a curved face adapted to bear 'conformingly' against the curved surface of the opening through along the sides of the insulator and: having their 2. Connecting means for an insulator of the strain type formed as a body of dielectric material having transverse openings therethrough arranged at right angles to each other with the adjacent surfaces of the respective openings curved, comprising asingle integral transverse member adapted to be inserted through each opening with its endsadapted to project beyond the opposite sides of the insulator, the transverse member having a curved face adapted to bear conformingly' against the curved surface of the opening through which it extends, a pair of linksslotted at one end and engaged upon theprojectingends of eachtransverse member and'adapted tolie other ends converging and terminating in at.- taching portions, each transverse member. have. ing' its projecting ends formed with elongated integral lateral extensions'overlying the links. at the ends of the slotstherein most remote from the converging ends ofthelinks, and retaining elements extending transversely through theprojecting ends of eachtransverse member. outwardly of and overlying :the outer faces of the links for maintaining thelinks 'closelyagainstthe body independently of the safety retaining function of said extension. v I a 3. Suspension and connecting means for an in sulator of the strain type formed: as an elongated substantially rectangular body ofdielectric material formed in its opposite faces with longitudinally extending grooves and formed with a pair, of transverse openings arranged atright angles to each other and opening out into said: grooves with the adjacent surfaces of the respective open-' ing'scurved, comprising a single. integral fiat transverse metallic member insertable. through ea'chopenin'gand having its ends'adapted .to pros ject beyond the opposite sides of the insulator,- a

pair of links adapted to be disposed against the 1 opposite sides of the insulator,xsaid links-being apertured at one'e'nd and engaged 'upon the projecting ends of each transverse member, said -links: being curved in cross section and:of angularform and thereby adaptedto conform to the curvature of the insulator at the grooves therein and.there-- by'further adapted to be parallel with thesides of the'insulator, the other ends of the links being adapted'to project beyond the endof the insulator and converging and terminating. in attaching means adapted to be connected with corresponding links adapted to beconnectediwith an adjacent insulator, each transverse member being formed at its projecting ends with integral lat erally extending horns located outwardly; of and 40 overlying the outer faces of ;.the links connected with it and projecting entirely beyond that edge of the transverse member most' remote fromthe converging ends of. thelinks, the slots being" ofv less length than said' horns whereby the links must be canted with respect 'to the insulator. to effect engagement upon said'transverse member.

' GREGORY C. HILL: 

